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प्रश्न
Find the T.S.A and L.S.A of the cube whose side is 21 cm
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उत्तर
21 cm
Side of a cube (a) = 21 cm
T.S.A of the cube = 6a2 sq.units
= 6 × 21 × 21 cm2
= 2646 cm2
L.S.A of the cube = 4a2 sq.units
= 4 × 21 × 21 sq.cm
= 4 × 441 cm2
= 1764 cm2
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